What does the commentator on Iron Chef Japan keep saying to the cohost that sounds like squee-san?

Question:

He prefaces his sentences with some word that sounds like squee-san, e.g.:
"Squee-san,"
"Yes?"
"Is that butter?"

Answer:

it's Fukui-san (the guy's name!)

The commentary is delivered by Kenji Fukui and Yukio Hattori

Details can be viewed http://en.wikipedia.org/wiki/Iron_Chef